Vibration analysis and data logging

Joao Ferreira

Hello all.

I am starting a project that consists on building an interface card for accelerometers to an embedded processor. This interface should have and ADC of 16-bit resolution and capable of reading 1KHz phenomena from 8 accelerometers.

I have no problem choosing an ADC the problem is that I need a MCU or DSP that is capable to process this data (digital filter and FFT) and than store it. Afterwards if there is any interesting information the data will be sent through ethernet or RS-232 to an embedded computer.

My first approach was using a C2000 MCU like Piccolo and add some RAM or even a SD card slot (which I don't know if it is fast enough). However, the DSP (C5000 series) have some signal processing advantages that I would like.

If you could share your thoughts about what MCU/DSP I should be looking at I would be grateful. Also, I am a beginner at TI products and framework so if a development kit is available that can help me on the learning process please advise.

Thanks for your time.

João Ferreira

over 14 years ago

0 Jeff Stafford over 14 years ago

TI__Expert 4595 points

Hi João,

If one of your goals are to integrate EMAC, external ADC, and DSP processing, then the Concerto devices are a good option for you:

· http://processors.wiki.ti.com/index.php/Category:C2000_Concerto_F28M35x

· http://focus.ti.com/mcu/docs/mcuproductcontentnp.tsp?sectionId=95&familyId=2049&tabId=2743&DCMP=concerto&HQS=Other+OT+concerto

These devices integrate (2) CPUs, one for the DSP processing (150 MHz floating point 28x CPU with VCU FFT acceleration) and a 2^nd CPU for communications (100 MHz M3with EMAC).

· C28 DSP

o For the FFT acceleration DSP section has the VCU unit. It is available on Concerto and Piccolo 28096x. For details see the Concerto Technical Reference Manual: http://www.ti.com/litv/pdf/spruh22.

o C28 has its own DMA for internal 12-bit ADC data acquisition

· M3 Communications

o M3 its own DMA for processing the EMAC communication and external memory interface (EPI)

o EPI supports external 16-bit ADCs

Regards,
Jeff

0 Joao Ferreira over 14 years ago in reply to Jeff Stafford

Prodigy 30 points

Thanks for the quick reply.

Concerto devices look really powerful and because I am not that into TI workframe I need to know how is the learning curve. Is there any development kit that you suggest to start working with these devices?

Best regards,

João Ferreira

0 Jeff Stafford over 14 years ago in reply to Joao Ferreira

TI__Expert 4595 points

João,

I recommend the "H52C1 Concerto Experimenter Kit ": http://www.ti.com/tool/tmdxdockh52c1.

Please review the Concerto-related videos. There are a great resource to get an overview of the device and to understand ways to share resources between the 28x and M3 CPUs.

Thanks, Jeff

0 Joao Ferreira over 14 years ago in reply to Jeff Stafford

Prodigy 30 points

Thanks for the information again.

Our group of engineers have looked at this board "H52C1 Concerto Experimenter Kit " and found it suitable for our application.

In order to buy this board we need a budget made by Texas or other distributer that you advise. We are located in Portugal can you tell me where should I go in order to get the budget for this board?

Regards,

João Ferreira

0 Jeff Stafford over 14 years ago in reply to Joao Ferreira

TI__Expert 4595 points

Hi João,

It is $185 on the TI eStore: https://estore.ti.com/Search.aspx?k=H52C1%20Concerto%20Experimenter%20Kit%20

Jeff

C2000™︎ microcontrollers

C2000 microcontrollers forum

Vibration analysis and data logging